Whoa! Kristen Stewart Goes Topless in On the Road Trailer (VIDEO)

Kristen Stewart is no-stranger to on-screen nudity — having shot scandalous scenes for films like The Runaways and Welcome to the Rileys — but she's unusually smoldering in the just-released trailer for On the Road, the upcoming adaptation of Jack Kerouac's classic book. Or could the extra heat just be that she's nestled between uber-hotties Garrett Hedlund and Sam Riley? Either way, she looks pretty comfortable!

On the Road premieres later this year at Cannes — and we can't wait to see it!